If you are to be Hercule Poirot, you must think of everything. - Agatha Christie

Every murderer is probably somebody’s old friend,” observed Poirot philosophically. “You cannot mix up sentiment and reason.

Oh, dear, it's quite true what Dr. Reilly said. How does one stop writing? If I could find a really good telling phrase... Like the one M. Poirot used. In the name of Allah, the Merciful, the Compassionate... Something like that.

There was only one thing about his own appearance which really pleased Hercule Poirot, and that was the profusion of his moustaches, and the way they responded to grooming and treatment and trimming. They were magnificent. He knew of nobody else who had any moustache half as good.